The EPA proposed on Friday to weaken air pollution limits for a chemical used to sterilize medical equipment. The proposal would reverse an earlier finding by the Biden administration that classified the chemical as a high-risk factor for cancer in its production. The chemical is used in healthcare to sterilize medical equipment. The EPA's proposal means weakening protections against air pollution with this carcinogenic gas. The change could affect health care workers and communities near sterilization facilities. The article points to a discrepancy between the EPA's efforts to weaken regulations and previous health risk assessments.